B09_Amd1_32_01_18_Asphalt_Patch_Specs_0001.docx
DOCX document 55 KB Posted
- Solicitation number
- 140P2022R0110
About this file
This document provides specifications for asphalt paving repair work for the YOSE 228193, 228205, 228214, Tuolumne Meadows Electric Distribution Replacement project in Yosemite National Park. The specifications cover the scope of work, which includes removing and replacing deteriorated asphalt and aggregate base in identified areas. It outlines materials and methods for the aggregate base course, asphaltic concrete, and performance requirements. The asphalt must meet Caltrans PG64-28 specifications. Compaction of 96% minimum is required for both the aggregate base and asphalt. Field testing will be conducted by the Testing Agency to ensure specification compliance for the aggregate base, asphalt mix properties and compaction levels. The related federal contract opportunity is for the YOSE 228193, 228205, 228214 project involving replacing the electric distribution lines at Tuolumne Meadows Ranger Camp West, Ranger Camp East, and Bug Camp in Yosemite National Park. Solicitation Number 140P2022R0110 was issued by the National Park Service National Office within the Department of the Interior.
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SECTION 32 01 18
ASPHALT PAVING REPAIR
PART 1 - GENERAL
1.1 SUMMARY
A. Includes But Not Limited To:
1. Remove and replace paving and aggregate base in specific areas as described in Contract Documents.
1.2 REFERENCES
A. Association Publications:
1. Asphalt Institute:
a. MS-4, ‘The Asphalt Handbook’ (Seventh Edition).
2. Structural Engineers. CASE Form 101: Statement of Special Inspections. Washington, DC: CASE, 2001. (c/o American Council of Engineering Companies, 1015 15th St., NW, Washington, DC 20005; 202-347-7474; www.acec.org).
3. International Code Council (IBC):
a. IBC Chapter 17, ‘Structural Tests and Special Inspections’.
B. Definitions:
1. Aggregate: A hard inert mineral material, such as gravel, crushed rock, slag, or sand.
2. Asphalt Cement: Asphalt that is refined to meet specifications for paving, roofing, industrial, and special purposes. Heat is required to make it fluid.
3. Caltrans Class II Base ¾” Aggregate: Aggregate that is graded from maximum size down through filler with object of obtaining an asphalt mix with a controlled void content and high stability.
4. Pavement Repairs: Sum of all activities undertaken to provide and maintain serviceable roadways upon completion of the electrical line replacement and/or additions. This includes corrective maintenance and preventive maintenance, as well as minor rehabilitation components.
5. Preventive Maintenance (PM): Planned strategy of cost effective treatments that preserves and maintains or improves roadway system without substantially increasing structural capacity.
6. Sand: Fine aggregate resulting from natural disintegration and abrasion of rock or processing of completely friable sandstone.
7. Tack Coat: Very light application of liquid asphalt, or asphalt emulsion diluted with water.
C. Reference Standards:
1. ASTM International:
a. ASTM C131-06, 'Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine'.
b. ASTM D1557-12, ‘Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))'.
c. ASTM D3381/D3381M-09a, 'Standard Specification for Viscosity-Graded Asphalt Cement for Use in Pavement Construction'.
1.3 ADMINISTRATIVE REQUIREMENTS
A. Pre-Installation Conferences:
1. Participate in pre-installation conference as specified in Sections 01 31 00 and 01 40 00.
2. In addition to agenda items specified in Section 01 31 00, review following:
a. Review aggregate base installation requirements.
b. Review asphalt paving repair (full depth patch) schedule.
c. Review asphalt paving repair (full depth patch) mix design.
d. Review safety issues.
B. Scheduling:
1. Notify Testing Agency and COR five (5) working days minimum before placing aggregate base material.
2. Notify Testing Agency and COR five (5) working days minimum before placing asphalt paving / full depth patch.
1.4 SUBMITTALS
A. Informational Submittals:
1. Manufacturer Instructions:
a. Asphalt Paving Patch:
1) Provide mix design.
2. Qualification Statement:
a. Installer:
1) Provide Qualification documentation.
B. Closeout Submittals:
1. Include following in Operations And Maintenance Manual specified in Section 01 78 00:
a. Record Documentation:
1) Manufacturer’s documentation:
2) Asphalt Manufacturer’s product literature.
1.5 QUALITY ASSURANCE
A. Qualifications:
1. Installer:
a. Minimum five (5) years experience in asphalt surface treatment installations.
b. Minimum five (5) years satisfactorily completed projects of comparable quality, similar size, and complexity in past three (3) years before bidding:
2. Upon request, submit documentation.
1.6 DELIVERY, STORAGE, AND HANDLING
PART 2 - PRODUCTS
2.1 MATERIALS
A. Caltrans Class II Aggregate Base or which meets the following grading requirements
1. Road Base type gravel or crushed stone, graded as follows:
| a. Sieve | Percent of Weight Passing | |
| 1) 1 inch | (25.4 mm) | 100 |
| 2) | 3/4 inch | |
| (19.0 mm) | ||
| 85 - 100 |
| 3) | No. | 4 |
| (4.750 mm) | ||
| 45 - 60 |
| 4) | No. 10 |
| (2.000 mm) | |
| 30 - 50 |
| 5) | No. 200 |
| (0.075 mm) | |
| 5 - 10 (non-plastic) |
B. Asphaltic Concrete
1. Asphalt Cement:
a. Meet requirements of Caltrans Performance Graded Asphalts as follows:
2. PG64-28 asphalt cementAggregates:
a. Fine to coarse mineral aggregates with wear less than 40 percent as determined by ASTM C131 and mineral filler suitable for pavement meeting following gradation requirements:
| 1) Sieve | Percent of Weight Passing |
| a) 3/4 inch (19.0 mm) | 100 |
| b) 1/2 inch (13.0 mm) | 95 - 100 |
| c) | 3/8 inch |
| (9.5 mm) | |
| 80 - | |
| 95 |
| d) | No. | 4 |
| (4.750 mm) | ||
| 54 - | ||
| 60 |
| e) | No. | 8 |
| (2.360 mm) | ||
| 38 - | ||
| 54 |
| f) | No. 30 |
| (0.594 mm) | |
| 17 - | |
| 32 |
PART 3 - EXECUTION
| g) | No. 200 |
| (0.075 mm) | |
| 3 - | |
| 8 (non-plastic). |
3.1 PERFORMANCE
A. Repair Of Deteriorated Areas:
1. Cut edges of pavement in rectangular shape and for 1 foot (300 mm) minimum beyond damaged material. Make vertical cuts using pavement saw or cold planer.
2. Subgrade:
a. Repair and recompact damaged subgrades.
3. Aggregate Base:
a. Remove and replace damaged aggregate base and sub-grade. Aggregate base is to be at least 6 inches (150 mm) thick when compacted.
b. Compact to ninety five (95) percent minimum density as determined by ASTM D1557.
c. Finished aggregate base course shall be true to line and grade within plus or minus 1/4 inch in 10 feet (6 mm in 3 000 mm).
4. Apply emulsion to aggregate base and tack coat to vertical edges of existing asphalt and curbs.
5. Asphalt Paving Patch:
a. Place full depth patch to match thickness of existing asphalt paving but not less than 3 inches (76 mm), at temperatures between 250 and 325 deg F (121 and 163 deg C).
b. Longitudinal bituminous joints shall be vertical and properly tack coated if cold. Transverse joints shall always be tack coated.
c. Compaction:
1) Compact asphaltic concrete paving to ninety six (96) percent minimum of design density.
2) Roll with powered equipment capable of obtaining specified density. Vibratory plate compactor may be used for areas too small for large power equipment.
3) Begin breakdown rolling immediately after asphalt is placed when asphalt temperature is at maximum. Complete breakdown rolling before mix temperature drops below 240 deg F (116 deg C). Complete handwork compaction concurrently with breakdown rolling.
4) Complete intermediate rolling as soon as possible after breakdown rolling and before mix temperature drops below 185 deg F (85 deg C). Do not roll paving for compaction purposes after asphalt temperature falls below 185 deg F (85 deg C).
5) Execute compaction so visibility of joints is minimized. Complete finish rolling to improve asphalt surface as soon as possible after intermediate rolling and while asphalt paving is still warm. Do not use vibration for finish rolling.
d. Surface shall be uniform with no 'birdbaths'. Leave finished surfaces clean and smooth. Variations from specified grades shall not exceed 1/2 inch (13 mm).
NOTE: As an alternative in some trench locations, which are to be approved by the COR, a concrete slurry may be used as alternative to fill soils, base aggregates or asphalt pavement. The concrete slurry shall be between 500-1000 psi.
3.2 FIELD QUALITY CONTROL
Field Tests and Inspections:
1. Aggregate Base:
a. Testing Agency shall provide testing and inspection for exterior aggregate base.
b. Number of tests may vary at discretion of COR.
c. Testing Agency will test compaction of base in place according to ASTM D1556, ASTM D2167, and ASTM D6938, as applicable. Tests will be performed at following frequency:
1) Sitework Areas: One (1) test for every 10,000 sq. ft. (930 sq. m) or less of exterior pads area but no fewer than three (3) tests.
2) Minimum one test per location.
2. Asphalt Paving:
a. Testing Agency shall provide full time nuclear density testing and inspection for asphalt paving during asphalt paving operations.
b. Inspection to include:
1) Aggregate coating.
2) Asphalt content.
3) Compaction control and effort required.
4) Gradation.
5) Suitability of spreading and paving equipment.
6) Temperature of mix as delivered and placed.
c. Field Tests: When tested with 10 foot (3 meter) straight edge, surface of completed work shall not contain irregularities in excess of 1/4 inch (6 mm).
1) Provide nuclear density testing of asphalt paving at a minimum rate of one (1) per 10,000 sq. ft. (930 sq. m). Minimum of three (3) tests required per area.
2) Asphalt paving shall be compacted to ninety six (96) percent minimum compaction.
3.3 CLEANING
A. General:
1. Upon completion of repair operations, clean up and remove debris.
END OF SECTION
| Yosemite – 228214, 229193, 228195 | 32 01 18 - 1 |
| August 2022 | Asphalt Paving Repair |
Chain Link Fences And Gates
- 10 - 32 3113
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